"It's the most difficult episode I've written," he says. He adds that for one of the aspiring rulers of Westeros, the episode presents them with an opportunity to decide what type of leader they would like to become.

Cogman has scripted some of the series most-discussed scenes to date, so the fact that this episode was the toughest he's faced has us intrigued. Among the key scenes Cogman previously scripted are the bathtub scene between Jaime and Brienne last season, and season one's introduction to Sam.